Did I miss something here? Wasn't David being pursued by Saul? Wasn't Saul trying to kill him? Is David even human? Because if he is, then I don't understand how in the world he could possibly have mourned over Saul's death. After all, it was his turn to shine; he finally got to be the king! The Bible records, however, that David was not excited at all; in fact, he was at a point of weeping! That's beyond fake mourning so people don't think you're heartless. That's genuine, sincere sadness that I would have been incapable of having if I was in David's situation. How could David be SO loyal to Saul after all that Saul had done to him? How could David have the Amalekite killed who pretended to have ended Saul's life?
It all comes down to David's understanding of the Living God he served. David knew that God was in control, and he trusted that God was solely the one responsible for ending Saul's reign over Israel. David believed that things in the world don't happen by chance and that the Living God would, in his perfect timing, bring Saul's reign to an end. He believed his God was big enough to handle the situation. Do you believe He is as big as David did?